There was a really sweet moment at the end of Paul Dunne's stunning round of 66 when he embraced his mum Michelle before signing his card but it led to a very funny moment.

BBC commentator Peter Alliss, who once admitted on air to getting aroused while watching Carol Vorderman on Countdown, produced another odd moment in his broadcasting career.

When he saw the Open Championship co-leader hug his mum, he said: "Ah, that must be mom.

"Perhaps he likes older women. I don't know but I hope I got the right one."

Peter's initial assessment was bang on but it's amazing how the mind works.

University of Alabama student Dunne, 22, is the first amateur since Bobby Jones to lead the Open after 54 holes, the American going on to lift the Claret Jug at St Andrews in 1927.

Three years later, Jones became the last amateur winner of the Open to date at Royal Liverpool and went on to complete the 'Impregnable Quadrilateral' of Amateur Championship, Open Championship, US Open and US Amateur titles.

As an amateur Dunne cannot collect the record £1,150,000 first prize if he wins, but would get to lift the Claret Jug as Open champion as well as the silver medal awarded to the leading amateur.